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2004
Fused pyridine derivatives
R 0450
Synthesis and Reactivity of Some Imidazo-, Triazolo- and Tetrazolo-Isoquinoline
— Isochromenecarbonitrile (I) reacts with glycine ester (II) under basic
48- 128 Derivatives.
conditions to give imidazoisoquinoline (III). Reactions of (I) with hydrazine hydrate
provide access to triazolo[5,1-a]isoquinoline [cf. (XI)], triazolo[3,4-a]isoquinoline
[cf. (XIII)] and tetrazoloisoquinoline derivatives [cf. (XV)]. Benzene ring nitration and
radical bromination of substituent methyl groups in the above four tricycles are studied
and some different positional reactivities are found. Bromomethyl derivatives (VIII)
and (XVI) thus obtained are transformed into new heterocyclic systems (X) and (XVII),
respectively. — (DEADY*, L. W.; DEVINE, S. M.; J. Heterocycl. Chem. 41 (2004) 4,
549-555; Sch. Chem., La Trobe Univ., Bundoora, Melbourne, Victoria 3083, Australia;
Eng.) — R. Staver
2004
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